package com.program.houai.util;

import com.baomidou.mybatisplus.core.metadata.IPage;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
import lombok.EqualsAndHashCode;

import java.io.Serializable;
import java.util.List;
import java.util.Map;

/**
 * 分页工具类
 *
 */
@Data
@ApiModel("分页返回数据对象")
public class PageUtils<T> implements Serializable {
    private static final long serialVersionUID = 1L;
    /**
     * 总记录数
     */
    @ApiModelProperty(value = "总记录数")
    private int totalCount;
    /**
     * 每页记录数
     */
    @ApiModelProperty(value = "每页记录数")
    private int pageSize;
    /**
     * 总页数
     */
    @ApiModelProperty(value = "总页数")
    private int totalPage;
    /**
     * 当前页数
     */
    @ApiModelProperty(value = "当前页数")
    private int currPage;
    /**
     * 列表数据
     */
    @ApiModelProperty(value = "列表数据")
    private List<T> list;

    @ApiModelProperty(value = "code码值")
    private Map<Object, Object> mapData;

    /**
     * 分页
     * @param list        列表数据
     * @param totalCount  总记录数
     * @param pageSize    每页记录数
     * @param currPage    当前页数
     */
    public PageUtils(List<T> list, int totalCount, int pageSize, int currPage) {
        this.list = list;
        this.totalCount = totalCount;
        this.pageSize = pageSize;
        this.currPage = currPage;
        this.totalPage = (int)Math.ceil((double)totalCount/pageSize);
    }

    /**
     * 分页
     */
    public PageUtils(IPage<T> page) {
        this.list = page.getRecords();
        this.totalCount = (int)page.getTotal();
        this.pageSize = (int)page.getSize();
        this.currPage = (int)page.getCurrent();
        this.totalPage = (int)page.getPages();
    }

    public PageUtils(IPage<T> page,Map<Object,Object> map) {
        this.list = page.getRecords();
        this.totalCount = (int)page.getTotal();
        this.pageSize = (int)page.getSize();
        this.currPage = (int)page.getCurrent();
        this.totalPage = (int)page.getPages();
        this.mapData = map;
    }
}